DualBook 8 languages

Live demo

Read a chapter in two languages

This is the opening of A Tale of Two Cities in English and Vietnamese, in the two layouts DualBook produces from a single translation run. Switch between them below.

Bilingual side-by-side reading in DualBook

The reader

Side by side, or stacked

Both come out of the same run at no extra cost. Side by side is for checking; stacked is for reading.

A Tale of Two Cities · Chapter I — The Period English → Tiếng Việt

Original

It was the best of times, it was the worst of times, it was the age of wisdom, it was the age of foolishness.

It was the epoch of belief, it was the epoch of incredulity, it was the season of Light, it was the season of Darkness.

It was the spring of hope, it was the winter of despair.

We had everything before us, we had nothing before us, we were all going direct to Heaven, we were all going direct the other way.

Translated

Đó là thời kỳ tốt đẹp nhất, cũng là thời kỳ tồi tệ nhất, là thời đại của sự khôn ngoan, cũng là thời đại của sự ngu xuẩn.

Đó là thời đại của niềm tin, cũng là thời đại của sự hoài nghi, là mùa của Ánh sáng, cũng là mùa của Bóng tối.

Đó là mùa xuân của hy vọng, cũng là mùa đông của tuyệt vọng.

Chúng ta có tất cả trước mắt, chúng ta chẳng có gì trước mắt, tất cả chúng ta đều đi thẳng đến Thiên đường, tất cả chúng ta đều đi thẳng theo hướng ngược lại.

Aligned paragraph by paragraph, so a glance across the gutter always lands on the same sentence.

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Flexible Output

Choose your reading style

Get exactly what you need with one translation run. Choose between bilingual side-by-side or translation-only output.

Original

It was the spring of hope, it was the winter of despair.

Translated

Đó là mùa xuân của hy vọng, cũng là mùa đông của tuyệt vọng.

Bilingual Side-by-Side

Read original and translated text together for maximum comprehension and language learning.

  • Original text preserved alongside translation
  • Perfect for language learners and comparison
  • Export as a bilingual EPUB

Translated

Đó là mùa xuân của hy vọng, cũng là mùa đông của tuyệt vọng.

Chúng ta có tất cả trước mắt, chúng ta chẳng có gì trước mắt.

Translation Only

Get a clean translated version without the original text, just like reading a regular book.

  • Pure translation for natural reading flow
  • Ideal for casual reading and entertainment
  • Export as a standard EPUB

Both formats generated from a single translation run — no extra cost

Inside the app

The screens behind the demo

What the reader above looks like in the product, and the steps that produce it.

drag
Uploading an EPUB file to DualBook
Upload

Drop in an EPUB

Drag and drop the file; the book is parsed chapter by chapter.

Choosing the target language and model before a translation run
Set up

Pick a language and a model

Choose the target language, the output style, and the AI model for the run.

Translation progress tracked chapter by chapter
Progress

Watch it translate

Most books finish in 10–30 minutes; progress is tracked live per chapter.

The bilingual reader with original and translation side by side
Reader

Read it in two languages

Original and translation aligned paragraph by paragraph.

The in-reader dictionary showing a definition and IPA pronunciation
Dictionary

Look a word up in place

Definitions, IPA pronunciation and examples without leaving the page.

Generating an audiobook from a translated book
Audiobooks

Turn it into audio

Four natural voices, exported as MP3 or M4B, chapter by chapter.

Try it with your own book

Read the first fifth of any book free

No card required. Upload an EPUB, choose a target language, and start reading in both.